Photo by: Craig RuttleImam Feisal Abdul Rauf, executive director of the Cordoba Initiative, addresses the Council on Foreign Relations in New York on Sept. 13, 2010. The organization planning to build an Islamic community center near the World Trade Center said Mr. Rauf, the imam who has been the public face of the project, will be playing a reduced role in the facility. The nonprofit group Park51 announced Friday, Jan. 14, 2011, that it had named a new imam to help lead religious programing so that Rauf could focus on other initiatives. (AP Photo/Craig Ruttle, File)

Robert Mueller’s special counsel investigation into Russian meddling in the 2016 election has cost $6.7 million during the first four and a half months of the probe. Click to see past independent counsel investigations guilty of racking up high bills.